Thienyl chalcogen-containing viologen as well as biquinoline derivative and application thereof
A technology based on chalcogen and thiophene is applied in electrical components, chemical instruments and methods, and color-changing fluorescent materials. It can solve the problems of low conjugation, wide bandgap, and application limitations, and achieve low reduction potential and narrow bandgap. Effect of width, strong visible light absorption
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[0075] The thienyl chalcogen-containing viologen and the thienyl chalcogen-containing biquinoline derivatives prepared by the present invention are prepared through the following steps:
[0076] (1) Preparation of thienyl chalcogen-containing viologen 3
[0077] Compound 1 (0.3 mmol), thienyl iodonium salt 2 (1.0 mmol) and copper acetate (0.017 mmol) were dissolved in DMF under the protection of an inert gas, and reacted at 40° C. for 8 hours. After removing the solvent under reduced pressure, the residue was dispersed in a mixed solvent of tetrahydrofuran / dichloromethane / ether with a volume ratio of 1:1:1, filtered, washed with dichloromethane, and dried to obtain thienyl chalcogen-containing viologen 3. R is a C0-C13 alkyl chain.
[0078] (2) Preparation of thienyl chalcogen-containing biquinoline derivatives 5
[0079] Compound 4 (0.3 mmol), thienyl iodonium salt 2 (1.0 mmol) and copper acetate (0.017 mmol) were dissolved in DMF under the protection of an inert gas, and r...
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